on
3.3
Backup Battery Installation
3.3
3.3
Setting up the System
3.4
Setting the Clock
3.5
Setting the Calendar
3.5
Recording User Messages
3.5
Calibrating the Clock
3.6
Calibrating the Thermometer
3.6
Setting to Fahrenheit/Celcius
3.7
Read Firmware Version
3.7
3.3
Placing the Temperature Sensor
3.8
Standard Enclosure
3.8
Section 4 Circuit Description, Warranty and Repair
4.1
Repair Safety Warnings
4.1
4.2
Circuit Description
4.1
4.3
Factory Service Policy
4.1
Section 5 Specifications
5.1
Electrical Specifications
5.1
5.2
Mechanical Specifications
5.1
5.3
Schematic Diagram
5.2
5.4
Component Layout
5.3
5.5
Parts List
5.4
TTI-2
Table of Contents
i Section 1 Safety Information
!
The Time/Temp/ID unit should be installed only by qualified technical personnel. An attempt to install this
device by a person who is not technically qualified could result in a hazardous condition to the installer or
other personnel, and/or damage to the TTI-2 or other equipment. Please ensure that proper safety
precautions have been made before installing this device.
The TTI-2, as any electronic device, can fail in unexpected ways and without warning. Do not use the Time/Temp/ID
in applications where a life-threatening condition could result if it were to fail.
The TTI-2 is designed for indoor use in a dry location. Installation and operation in other locations could be
hazardous. Use only the original wall-plug power supply supplied with the unit.
The purchaser and user of the TTI-2 bears the sole responsibility for determining suitability of this equipment for their
intended use. Because this equipment can fail in an unpredictable or unexpected way, even in normal use, Sine
Systems, Inc. cannot be held responsible for damages, either direct or indirect, resulting from use of this equipment.
TTI-2
Safety Information
page 1. 1 Section 2 System Description
2.1 General
Description
The Time/Temp/ID is a talking clock/thermometer that is typically used with a program automation system. The TTI-2
will deliver the time, the temperature, or both on command from the automation system. When time and/or
temperature delivery is complete, the TTI-2 gives an end-of-message signal to the automation system to resume
programming. The Time/Temp/ID can be programmed to give the temperature in Fahrenheit or Celsius. The time is
reported to the nearest minute.
The TTI-2 can record and store two audio messages of up to 30 seconds each in nonvolitile memory. These can be
used for station IDs or sign on/sign off messages, etc.
The TTI-2 measures 19 inches wide and 1.75 inches tall and can be mounted in a a single space (1U) of a standard
EIA equipment rack. The front panel has three pushbuttons for setup and control, and four LED indicators for system
status. The rear panel contains 15 screw-terminal connections for the various inputs and outputs.
The TTI-2 comes with one temperature sensor for air temperature measurement. It should be mounted in a standard
enclosure for the most accurate temperature measurement. Details of the standard enclosure are provided later in
this manual.
There is an internal connector for a rechargable 9 volt battery that can maintain TTI-2 operation for short time periods
when AC power is lost. Since the TTI-2 is typically used on-air, it may be appropriate to power the unit from a battery
or generator backed power supply that powers other program audio source devices.
The internal clock is synchronized to the incoming AC voltage to ensure long-term accuracy of the time. The clock
speed can also be adjusted in firmware if the TTI-2 is powered by a power source other than AC wall current.
To make the Time/Temp/ID more natural sounding, it does not speak the time and temperature the same way each
time. The output script is automatically rotated each time it speaks. Here are the possible output scripts:
Time Only
Length
Its 3:27
1.5 seconds
The time is 3:27
2.0 seconds
Temperature Only
Length
The temperature is 72 degrees
2.0 seconds
Its 72 degrees outside
2.0 seconds
Time and Temperature
Length
Its 3:27 and the temperature is 72 degrees
3.0 seconds
Its 72 degrees outside at 3:27
3.0 seconds
At 3:27 the temperature is 72 degrees
3.0 seconds
The time is 3:27 and the temperature is 72 degrees
3.5 seconds
TTI-2
System Description
page 2. 1 2.2
Front Panel Switches and Indicators
The front panel of the TTI-2 has three momentary pushbutton switches that are used to adjust the system and four
LEDs that indicate the status of the system.
Figure 2.1; Time/Temp/ID front panel
2.2.1
Front Panel Switches
The front panel switches are as follows: SELECT selects an item to adjust. Items are indicated by the LED indicators as described below. UP increments one unit DOWN decrements one unit
While recording messages the buttons have an alternate function as shown by the highlighted text: STOP ends message recording REC starts message recording PLAY plays back the recorded message
2.2.1
Front Panel Indicators
The front panel of the TTI-2 has a four LED indicators to display system status. The leftmost LED does not have a
text label. It is denoted by a series of lines and dashes. In normal operation this LED indicates system power and is
illuminated continuously. It blinks off very briefly every minute at the top of the minute (0 seconds). The other LEDs
indicate one of three modes depending on the state of the power LED.
When the power LED is not flashing, the programming LEDs indicate HOURS pressing up or down will increment or decrement the clock hours MINS pressing up or down will increment or decrement the clock minutes TIME pressing up or down will increment or decrement the clock speed calibration
When the power LED is flashing slowly, the programming LEDs indicate MONTH pressing up or down will increment or decrement the calendar month DAY pressing up or down will increment or decrement the calendar day YEAR pressing up or down will increment or decrement the calendar year
When the power LED is flashing rapidly, the programming LEDs indicate MSG 1 the buttons operate in recording mode as play, record and stop MSG 2 the buttons operate in recording mode as play, record and stop TEMP pressing up or down will increment or decrement the temperature sensor calibration
TTI-2
System Description
page 2. 2 2.3
Rear Panel Connections
The rear panel of the TTT-1 contains all the I/O connections to the device. Power, control I/O and program audio
connect through depluggable screw terminal connections. Unbalanced user message audio recording and audition
playback is through two 3.5mm phone connectors.
Figure 2.2; Time/Temp/ID rear panel
2.3.1
Time/Temperature
Two sets of input terminals on the rear-panel of the TTI-2 are used to make it deliver the time and/or temperature.
These terminals are pulled-up to +5 volts and are activated by momentarily pulling them to ground. This can be done
with a contact closure, an open-collector, an optocoupler, or a 5 volt logic-level signal. Grounding the Time terminal
causes the TTI-2 to deliver the time and grounding the Temp terminal causes it to deliver the temperature.
Grounding both terminals at the same time causes the TTI-2 to deliver both the time and the temperature.
These inputs are internally de-bounced and have transient-voltage and RFI protection. Optocoupler isolation should
not be required except in cases of extremely long wire runs.
2.3.2
Message1/Message 2
Two sets of input terminals on the rear-panel of the TTI-2 are used to make it deliver user recordable message 1 or
message 2. These terminals are pulled-up to +5 volts and are activated by momentarily pulling them to ground. This
can be done with a contact closure, an open-collector, an optocoupler, or a 5 volt logic-level signal. Grounding the
Msg 1 terminal causes the TTI-2 to deliver user programmable message 1 and grounding the Msg 2 terminal
causes it to deliver user programmable message 2.
These inputs are internally de-bounced and have transient-voltage and RFI protection. Optocoupler isolation should
not be required except in cases of extremely long wire runs.
2.3.3
Audio Output
The Time/Temp/ID has two audio outputs. Both audio outputs are always active and they are fed by the same audio
source. A transformer balanced, 600 ohm, +4 dBm line-level output designed for connection to an automation
system appears on the rear-panel at the terminals labeled Audio + and Audio -.
The secondary unbalanced output is available for driving a small speaker (at low level) or a pair of headphones. This
output provides audition audio when recording user programmable messages or when calibrating the clock and
thermometer. It appears on a 3.5mm phone plug labeled Phones.
2.3.4
Audio Input
The Time/Temp/ID has one audio input that is the source audio when recording the user programmable messages.
This input is designed for unbalanced, mic-level audio. The 3.5mm phone plug is labeled Audio In.
TTI-2
System Description
page 2. 3 2.3.5
Temperature Sensor
There are three terminals on the TTI-2 main unit for the outboard temperature sensor. They are labeled Sensor G,
Sensor and Sensor +. Shielded cable should be used to connect the G, and + termimals on the sensor to
the equivalent terminals on the TTI-2 rear panel.
2.3.6
End-of-Message (EOM) Output
The end-of-message (EOM) output is a pair of floating, single-pole relay contacts. The relay contacts are normally
open--they close for 0.5 seconds at the end of audio. The contacts are labeled EOM on the rear-panel.
2.3.7
Power
The TTI-2 is powered by a 12VAC wall plug transformer. It connects at the two terminals labeled 12VAC.